March 21, 2005
Contact: Stan Ward
Phone: (717) 487-4768
Patent issued for SLATE SAVERS Process
Pa. - The U.S. Patent and Trademark Office has notified
Slate Savers of its intent to grant patent #6,862,862 for
“Pressure Injection of Flexible, Polymer Grout into
Slate Roofs,” the signature process of the Slate Savers
system for restoring and preserving existing, aging slate
Ward, president of Slate Savers, says,” We are committed
to historic slate roof preservation and maintenance, and
the patent identifies Slate Savers as unique in this regard.
Slate Savers has a 16-year development history, with eight
years of field experience using and improving the technique.”
Savers is the only system that approaches historic roofing
issues with a cost-effective process that allows the building
owner to “recycle” slate by leaving the roof
intact. Our signature technique uses a slate “grout”
– or slate “caulk” – that is injected
to adhere each roof tile to its six surrounding neighbors.
The water-based polymer we use is especially designed to
add strength to a slate roof while providing flexibility
for dimensional changes. Once grouted, each individual tile
shares the strength of all its adjoining tiles. The roof
becomes a monolithic membrane functioning as one whole instead
of multiple pieces dependent upon one another.
is anticipated that the Slate Savers process will provide
a maintenance-free second life cycle, extending the serviceability
of the existing roof components for several more decades.
Slate Savers grouting technique is not a coating, although
a very thin film remains after the process to give the roof
a uniform look at the outset. This film wears off quickly
(within a few months to a year), leaving the slate grouting
are currently using the Slate Savers system in a multi-million
dollar, multi-year project on the historic buildings at
the Sheppard and Enoch Pratt Hospital in Baltimore, Maryland.
At the hospital, we’re installing the Slate Savers
system at less than one-half the cost of slate roof replacement.
addition to the slate portion of the roof system, building
owners and managers often face serious issues with other
components of the roof, such as valleys and gutters. Slate
Savers has a complete, integrated system of products and
application procedures that will address all areas, including
masonry and chimneys. These products have been developed
over the course of many years and are described in detail
on the Slate Savers web site, www.slatesavers.com.
approved local applicator for Slate Savers is Mason
Dixon Building Maintenance, also located in Stewartstown.
Tuesday, 19 Aug. 2003
saves weathered slate.
Slate Savers offers an alternative to replacing worn slate
SEAN ADKINS Daily Record
For Stan Ward, success can be traced to the bottom of a
steel drum filled with what appears to be gallons of heavy
Last year, Ward opened Slate Savers in Stewartstown and
offered customers an affordable liquid alternative to the
costly replacement of worn slate roofs. Rather than workers
replacing weathered slate with new stone, Slate Savers injects
an acrylic polymer mixed with ground slate into the cracks
and crevices of a roof. When dry, the individual sections
of slate originally secured by nails become one solid structure
that can extend the life a typical roof by 50 years, Ward
The process has been filtered through various stages of
trial and error.
In 1990, two customers of Ward's Mason-Dixon Building Maintenance
in Stewartstown came to the structural repair company with
slate roof repair jobs.
At that time, Ward had been working with an outside manufacturing
partner to create a rubberized asphalt material to repair
slate roofs. Ward treated the two roofs with the experimental
material, but the end result required slate-colored paint.
The company returned to the draw ing board in search of
material that matched the color and function of an original
After four years of research, Ward and his partner experimented
with an acrylic polymer that would give the roof flexibility
and be aesthetically pleasing, Ward said. Ward cranked
up his marketing machine to get the word out about the system
and began to approach local contractors about being licensed
Matt Ream, owner of Ream Roofing Associates in Dallastown,
said he listened to the Slate Savers presentation but was
not sold on the product. From an industry perspective,
an old slate roof should be replaced or repaired with individual
pieces of slate depending on the condition of the roof,
Ream said he wasn't sure if he agreed with the Slate Savers
process and questioned if the material could cause a problem
with the normal expansion and contraction of the roof.
"I wouldn't say we would never use Slate Savers, but right
now we are going by basic industry practice," he said. "The
system may be fine, I'm just not sure at this point."
Ward said the flexible nature of the material tolerates
thermal changes and normal building movement, and can adjust
to large loads such as heavy snowfalls. "Some of the
roofers we approached see the process as eating into their
workload and eliminating maintenance work," he said. "Pieces
don't fall out once you've done this."
Aside from extending the life of a roof that is reputed
to last roughly 100 years, the process is cheaper than most
slate projects. Slate Savers would charge about $15,000
to repair the roof of a 2,500-square-foot home using its
slate-grouting injection technique, Ward said.
A resident with a similar-sized home would pay roughly $30,000
to have a new slate roof installed, he said.
"We get about two calls a week from people asking about
Slate Savers," Ward said. "We are getting a good response
from the industry."
Slate Savers is on its third leg of a $1.8 million project
that involves repairing brick, replacing downspouts and
grouting a 70,000-square-foot slate roof at Sheppard and
Enoch Pratt Hospital in Towson, Md.
Mason-Dixon Building Maintenance has taken on the role of
Slate Saver installer, Ward said.
Regardless of the success of the business, Ward said he
has no plans to apply for a patent for the slate grout.
'That would give away our trade secret and recipe," he said.
"I believe slate grouting will be the next buzz word in
the industry next year."
Reach Sean Adkins at 771-2047 or email@example.com.
Friday, 29 Aug. 2003
hits Md. hospital
Slate Savers' owner believes his grout system may have kept
from reaching the fire.
SEAN ADKINS Daily Record
Stan Ward has a theory on what saved a 19th century hospital
building in Towson, Md., from being consumed by flames after
a lightning bolt destroyed its fifth-story cupola.
"It burned slower because the slate roof had been grouted,"
said Ward, owner of Slate Savers in Stewartstown.
Last year, Slate Savers covered the more than 100-year-old
roof of Sheppard and Enoch Pratt Hospital's B Building with
an acrylic polymer grout aimed at restoring the slate cover.
Ward's business gives home and business owners an affordable
liquid alternative to the costly replacement of aging slate
On Wednesday night, the hospital evacuated 51 psychiatric
patients and 10 staff members from its B Building as a lightning-induced
fire ripped through its cupola. Roughly 150 firefighters
and emergency medical personnel responded. One female
patient suffered minor injuries during the evacuation, and
a volunteer firefighter was hurt while carrying a hose.
Most of the four-alarm blaze was contained to the cupola.
The building below sustained damage from the water used
to extinguish the flames on the roof, said firefighter Timothy
L. Robinson of the Baltimore County Fire Department.
Ward said he believes the grout that his company wedged
in between the grooves of the slate prevented oxygen from
entering the burning building through the roof.
For the last few years, Slate Savers has worked to complete
its $1.8 million contract to grout 70,000 square feet of
Sheppard Pratt roof space. A non-grouted slate roof
ventilates oxygen, he said. "It could be that the
grout saved the building," Ward said.
A Baltimore County Fire Department official could not confirm
if the grout helped firefighters get the blaze under control
As part of the building's fire suppression system, alarms
sound and the ventilation system shuts down, preventing
oxygen from feeding the fire, Ward said. For now,
an outside fire restoration contractor will ventilate the
building, remove the debris and install a tarp over the
burned cupola, he said.
Slate savers will not grout a new slate roof if the hospital
elects to restore the building.
"Our system is for historic roofs," Ward said. "There's
no reason to grout a roof until it is 60 to 80 years old."
Sean Adkins at 771-2047 or firstname.lastname@example.org.